Question

我正致力于Goefencing的演示。

这是我的代码，

- (void) registerRegionForMonitoring {

    if (self.locationManager == nil) {
        self.locationManager = [[CLLocationManager alloc] init];
        self.locationManager.delegate = self;
        self.locationManager.desiredAccuracy = kCLLocationAccuracyBest;
        self.locationManager.distanceFilter = kCLDistanceFilterNone;

        if ([self.locationManager respondsToSelector:@selector(requestAlwaysAuthorization)]) {
            [self.locationManager requestAlwaysAuthorization];
        }

        [self.locationManager startUpdatingLocation];
    }

    if(![CLLocationManager isMonitoringAvailableForClass:[CLCircularRegion class]]) {
        [Utilities showAlertWithTitle:@"Geofence" andMessage:@"This app requires region monitoring features which are unavailable on this device."];
        return;
    }

    for(NSDictionary *dictionary in geofences) {

        NSString *geofenceId = [NSString stringWithFormat:@"%@", [dictionary valueForKey:@"geofence_id"]];
        CLLocationDegrees latitude = [[dictionary valueForKey:@"latitude"] doubleValue];
        CLLocationDegrees longitude =[[dictionary valueForKey:@"longitude"] doubleValue];
        CLLocationCoordinate2D centerCoordinate = CLLocationCoordinate2DMake(latitude, longitude);
        CLLocationDistance regionRadius = [[dictionary valueForKey:@"radius"] doubleValue];

        CLRegion *geofenceRegion = [[CLCircularRegion alloc] initWithCenter:centerCoordinate radius:regionRadius identifier:geofenceId];
        [self.locationManager startMonitoringForRegion:geofenceRegion];
   }
}

以下是委托方法

- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations {

    CLLocation *latestLocation = [locations lastObject];
    self.currentLocation = latestLocation;
}

- (void)locationManager:(CLLocationManager *)manager didEnterRegion:(CLRegion *)region {
    [Utilities showAlertWithTitle:@"Geofence" andMessage:[NSString stringWithFormat:@"You are in region with identifire %@", region.identifire]];
}

- (void)locationManager:(CLLocationManager *)manager didStartMonitoringForRegion:(CLRegion *)region {
    [self.locationManager requestStateForRegion:region];
}

- (void)locationManager:(CLLocationManager *)manager didExitRegion:(CLRegion *)region {
    [Utilities showAlertWithTitle:@"Geofence" andMessage:[NSString stringWithFormat:@"You are out of region with identifire %@", region.identifire]];
}

- (void)locationManager:(CLLocationManager *)manager didDetermineState:(CLRegionState)state forRegion:(CLRegion *)region {

    if (state == CLRegionStateInside) {
        //  if user already in the region, when monitoring is started
        [Utilities showAlertWithTitle:@"Geofence" andMessage:[NSString stringWithFormat:@"You are in region with identifire %@", region.identifire]];
    }
}

我还在iOS 8 +的"NSLocationAlwaysUsageDescription"文件中添加了密钥plist

还在以下添加的背景模式下：

应用程序注册位置更新
App使用CoreBluetooth共享数据
App使用CoreBluetooth进行通信
应用下载内容以响应推送通知

iOS 7上的一切正常，也适用于iOS 8.4的iOS模拟器

它无法在设备上运行（iOS 8.4，iPad和iPod）

我已经通过wifi检查了。

我也开启了'General＆＃39; - ＆GT; ＆＃39;后台应用刷新＆＃39;在设置

我不知道自己错过了什么？

欢迎所有建议。提前谢谢。

Answer 1

您是否尝试过检查该地区是否真正开始跟踪？此方法将返回错误。

- (void)locationManager:monitoringDidFailForRegion:withError:

如果在从gps获得好位置之前调用start monitoringForRegion，则可能会出错。

此外，您可能需要检查CLRegionStateUnknown中的状态didDetermineState，因为这也是一个选项。

在iOS 8.4（设备）上没有调用CLLocationManager的委托方法didEnterRegion，didExitRegion和didDetermineState

1 个答案: